What was New Testamant Christianity really like? We must look to the Acts of the Apostles, as well as the records of the early Apostolic Fathers. Theirs is a critically important witness to the actual Apostolic Deposit. The foundations of the Apostolic Age were mission and community. The role of the Holy Spirit was evident, as many were drawn to the Church in spite of persecution and no material gain. These believers were literally "incorporated into Christ", to use their own language. Though the faith of the early believers was intensely personal, it was not individualistic.

The central thrust of the Church was not to gather a few people together and meet privately. It was to go out. For this reason, Christianity was a threat to the structure and balance of the worldly powers in the first centuries AD.

Heresy and disunity were the greatest internal threats to the Early Church. Wholeness was very much connected with holiness. The early apologists saw the Church's unity as a reflection of God's own wholeness. Corresponding to the universal call to holiness was the importance of catholicity - universality and unity.